Portable Lung Trainer & Breathing Exerciser

Strengthens inspiratory muscles (diaphragm & intercostals) in just 5–10 minutes daily – increases lung volume, VO2 max, and endurance in as little as 4 weeks. 6-level resistance dial lets you progress from beginner to advanced – perfect for athletes, singers, COPD patients, asthma sufferers, or post-surgery recovery. Weighs only 2.1oz (60g) and is smaller than a smartphone – easily fits in your pocket, gym bag, or purse for training anywhere, anytime. Soft, flexible mouthpiece and medical-grade silicone construction – comfortable for long sessions, easy to clean, and 100% BPA-free. Trains both inhalation and exhalation strength – improves core stability, reduces shortness of breath, and enhances overall respiratory efficiency. Just inhale/exhale through the mouthpiece – built-in resistance valve does the work; no batteries, apps, or complicated setup required.